I think it would help if somebody could explain to me (or point me to a
web resource) about how you select an output in ALSA. I know how to do
it with 'aplay' since it has a special command-line option, but I'm
doing speech with the festival speech engine and the output just goes to
the first output channel and I don't know how to control that. Do I
just point the program to a different device file in /dev?
Here is my /etc/asound.conf:
pcm.dmixer {
type dmix
ipc_key 1024 # must be unique!
slave {
pcm "hw:0,0" # you cannot use a "plug" device here, darn.
period_time 0
period_size 1024 # must be power of 2
buffer_size 6553 # dito. It
#format "S32_LE"
#periods 128 # dito.
#rate 8000 # with rate 8000 you *will* hear,
# if ossmix is used
}
}
pcm.ice1712 {
type hw
card 0
device 0
}
ctl.ice1712 {
type hw
card 0
device 0
}
# adcdac 1&2
pcm.channel1 {
type plug
ttable.0.0 1
ttable.1.1 1
slave.pcm "dmixer"
}
# adcdac 3&4
pcm.channel2 {
type plug
ttable.0.2 1
ttable.1.3 1
slave.pcm "dmixer"
}
#adcdac 5&6
pcm.channel3 {
type plug
ttable.0.4 1
ttable.1.5 1
slave.pcm "dmixer"
}
# adcdac 7&8
pcm.channel4 {
type plug
ttable.0.6 1
ttable.1.7 1
slave.pcm "dmixer"
}
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